Browse > Article

Surface Microtopography of Pyrophyllite Crystals from Gussi Deposit, Korea  

Mayumi Jige (Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University)
Ryuji Kitagawa (Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University)
Hwang, Jin-Yeon (Department of Geology, College of National Sciences, Pusan National University)
Publication Information
Journal of the Mineralogical Society of Korea / v.17, no.2, 2004 , pp. 115-121 More about this Journal
Abstract
The surface microtopography of pyrophyllite collected from the Gussi deposit, Korea was observed by mean of transmission electron microscopy (TEM) with the gold decoration technique. As results, closed step patterns with malformed circular islands were characteristically observed on the (001) surface of pyrophyllite, contrasting with spiral step patterns common in illite and kaolinite. Gussi pyrophyllite was likely crystallized from hydrothermal solution of higher temperature and/or higher supersaturation than those of other clay minerals. Comparing with micro-topographies of pyrophyllite from the Shokozan and the Uku deposits, southwest Japan, growth mechanism of Gussi pyrophyllite is almost equivalent to those from the Shokozan and the Uku deposits.
Keywords
pyrophyllite; surface microtopography; transmission electron microscopy (TEM); crystal growth; clay mineral;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Kitagawa, R. (1997) Surface microtopography of clay minerals by Au-decoration method and its technical problems. Jour. Mineral. Soc. Japan 26, 215-220 (in Japanese with English abst.).
2 Koh, S.M., Takagi, T., Kim, M.Y., Naito, K., Hong, S.S., and Sudo, S. (2000) Geological and geochemical characteristics of the hydrothermal clay alteration in South Korea. Resource Geol., 50, 4, 229-242.
3 Shibata, K and Fujii, N. (1971) Study on the Roseki deposits in Mitsuishi area, Okayama Prefecture, -Part 2 K-Ar age of sericite ore from Yagi mine-. Bull. Geol. Surv. Japan, 22, 575-580 (in Japanese with English abst.).
4 Sunagawa, I. (1981) Characteristics of crystal growth in nature as seen from the morphology of mineral crystals. Bull. Minerl. 104, 81-87.
5 Tomura, S., Kitamura, M., and Sunagawa, I. (1979) Surface microtopography of metamorphic with micas. Phys. Chem. Minerals 5, 65-81.
6 Eberl, D. (1979) Synthesis of pyrophyllite polytype and mixed layers. Amer. Miner., 64, 1091-1096.
7 Zaykov, V.V., Udachin, V.N., and Sinyakovskaya, I.V., (1988) Pyrophyllite deposits: Int. Geol. Rev., 30, 90-103.
8 Kitagawa, R. (1998) Surface microtopography of illite crystals from different modes of occurrence. Canadian Mineral. 36, 1559-16567.
9 Ishihara, S. and Imaoka, T. (1999) A proposal of Caldera-Related Genesis for the Roseki Deposits in the Mitsuishi Area, Southwest Japan. Resource Geology, 49, 3, 157-162.
10 Hida, T., Ishihara, S., Mizuno, T., and Ishikawa, Y. (1996) Geologic characteristics and formation environments of the Yano-Shokozan Pyrophyllite deposit in Hiroshima Prefecture, Japan. - Volcanic successions and hydrothermal alterations processes. Jour. Clay Sci. Japan, 36, 2, 67-72. (in Japanese with English abstract).
11 Jige, M., Kitagawa, R., and Ikemi, N. (2002) Surface microtopographies of pyrophyllite and kaolinite occurred in the Uku pyrophyllite deposit. Jour. Clay Sci. Japan, 42, 1, 15-20 (in Japanese with English abst.).
12 Brindley, G.W. and Wardle, R. (1970) Monoclinic and triclinic forms of pyrophyllite and pyrophyllite anhydride. Amer. Miner., 55, 1259-1272.
13 Kitagawa, R. (1992) Surface microtopography of pyrophyllite from the Shokozan area, Chugoku province, southwest Japan. Clay Sci., 8, 285-295.
14 Sunagawa, I. (1977) Natural crystallization: Jour. Cryst. Growth 42, 214-223.
15 Sunagawa, I., Koshino, Y., Asakura, M., and Yamamoto, T. (1975) Growth mechanism of some clay minerals. Fortschr. Mineral. 52, 217-224.
16 Matsumoto, K. (1979) A guide to exploration for pyrophyllite clay deposits, Japan. Min. Geol., 29, 5, 281-290. (in Japanese with English abstract).
17 Kitagawa, R., Nishido, H., Hwang, J.Y., and Yang, P. (1999) Geochronological study of pyrophyllite deposits in East Asia. Resource Geol. Special Issue, 20, 123-128.
18 Fiji, N., Hirano, H., Sudo, S., Kamitani, M. and Togashi, Y. (1979) Geologic features related to formation of the pyrophyllite and sericite clay (roseki) deposits in the Mitsuishi area, Southwest Japan. Mining Geology, 29, 2, 83-95. (in Japanese with English abstract).
19 Sato, H. (1970) Microstructure of mica cleavage surfaces. Jour. Japan Assoc. Mineal. Petrol. Econ. Geol. 64, 192-198.
20 Sunagawa, I. and Koshino, Y. (1975) Growth spirals on kaolin group minerals. Amer. Mineral, 60, 401-412.
21 Kim, I. J. and Nagao, K. (1992) K-Ar ages of the hydrothermal clay deposits and the surrounding igneous rocks in southwest Korea. Jour. Petrol. Soc. Korea, 1, 1, 58-70.